METRON QA-45, User & Service Manual, Page: 20 / 74

Rear Panel
8. High Level ECG Jack 1/4” standard phone-jack for amplitude of 1 V/mV of low
level Lead 1 signal.
9. Oscilloscope Output BNC-contact for attenuated signal in real time.
10. RS-232 Serial Port 9-pin D-sub
11. Printer Outlet Port 14-25 pin D-sub
12. Location of Batteries 2 compartments in the base of the instrument can be
opened to replace the batteries.
13. Battery Eliminator
Socket
Battery contact for connecting 9V 100 mA battery elimina-
tor.
3.2 QA-45 Menu and
Function Keys
The QA-45 uses display and programmable function keys to provide
flexibility and control over the operations. The upper part of the
screen displays messages, status and results. The menu bar is at the
bottom of the display. The function keys are numbered from Fl to
F5.
A function is selected by pressing the key located directly under the
Menu Item displayed in the menu bar. A menu unit is written in cap-
ital letters.
The menu comprises three pages. The next pages of the menu are
selected by pressing more-2 , more-3 or more-1 .
3